High Softening Temperature, E.g., Exposure To Boiling Water, Boilable, Etc. Patents (Class 526/940)
  • Process for reprocessing plastic wastes
    Patent number: 5472997
    Abstract: The invention relates to a process for reprocessing plastic wastes, in which the plastic wastes filled into vessels are autoclaved as coherent, porous bundles with high water absorption capacity in a steam atmosphere at approximately 150.degree. to 220.degree. C., preferably 165.degree. to 190.degree. C., and melted by this means, at the end of the autoclaving process, the resulting bodies of molten plastic are at least partly dried by re-evaporating the water contained therein and are cooled.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: December 5, 1995
    Assignee: Sicowa Verfahrenstechnik fur Baustoffe GmbH & Co., KG
    Inventors: Thomas Koslowski, Wolfgang Schmitz, Olaf Musebrink